Version Number: 184.108.40.206
Platform: Windows 2000 Professional
Registered Name: Kyung-Taek_Lim
License ID: L2962-6007
My Mathematica has problem with user defined symbols.
I am not asking about numerical error.
I very often see that Mathematica is confused by user-defined symbols and give weird result. Here is an example.
One day, Plot worked or did not work depending on which user-defined symbol I used: ellf or elf. I have the nb file.
Today, I copied that nb file to a new nb file, and evaluated it. This time, Plot worked with both ellf and elf.
Why does Mathematica show such an inconsistant behavior with user defined symbols?
Is this caused by some incompatibility of Mathematica with Windows 2000?
Below is the nb file that depended on whether I used ellf or elf.